Marquette Hellige GmbH
MicroSmart V 2.xx
Page 27
Servicing Instructions 227 470 35 B - 97.12
Voltage 24V
Switching
regulator
Uin
GND
GND
Uout
24V DC/DC converter
V500
T7
L504
Besides the logic supply, the thermal array needs a 24V power supply to current-activate the dots.
This 24V voltage is also used for the stepping motor. The voltage is generated by the switching
regulator MC33063. The switching regulator works in step-up operation in connection with the
external power MOSFET. For brief peak loads, the electrolytic storage capacitor supplies the
necessary power.
Input voltage
10V...16V
Output voltage
+23.5 V ± 5%
Output current
min. 0 mA, max. 600 mA
Efficiency
80%
Содержание MicroSmart
Страница 1: ...Servicing Instructions MicroSmart Version 2 xx 227 470 35B SA e ...
Страница 71: ......
Страница 72: ......
Страница 73: ......
Страница 74: ......
Страница 75: ......
Страница 76: ......
Страница 78: ......
Страница 79: ......
Страница 88: ......
Страница 89: ......
Страница 90: ......
Страница 91: ......